R.O.G Plumbing Tools has been a recognized name in the San Pedro plumbing industry for over 2years. R.O.G Plumbing Tools carry a range of plumbing tools to suit every plumbing task great or small. The R.O.G Plumbing Tools range includes industry renowned plumbing tools from leading manufacturers including Pump 'n' Save and Drillz.R.O.G Plumbing Tools supply a range of pumps, fittings, hydraulic wrenches and pipes to suit every budget.The word siphon (Greek: Σιφών, also spelled syphon) is sometimes used to refer to a wide variety of devices that involve the flow of liquids through tubes. But in the English language today, the word siphon is usually understood to be a reference to the device that is commonly in the form of a tube in an inverted U shape, which is used to cause a liquid to flow uphill, above the surface of the reservoir, without pumps, powered by the fall of the liquid as it flows down the tube under the pull of gravity, and is discharged at a level lower than the surface of the reservoir. In practical siphons, atmospheric pressure pushes the liquid up the tube into the region of reduced pressure at the top of the tube. The reduced pressure is caused by liquid falling on the exit side. In the laboratory, some siphons have been demonstrated to work in a vacuum, indicating the tensile strength of the liquid is contributing to the operation of siphons at very low pressures.